CATElectrical Parts

RE12180 Speed Sensor — Cat 644G 644E

This is a speed sensor, an electronic device that measures the rotational speed of a component, typically a driveshaft or wheel hub, and converts it into an electrical signal. This signal is sent to the machine's control module (ECU) to monitor vehicle speed, manage transmission shifts, and activate safety systems like traction control. A faulty speed sensor can cause inaccurate speedometer readings, erratic transmission behavior, or disable speed-related safety features.

Speed Sensor – Part No RE12180 – CAT Spare Part
Part Specifications
BrandCAT
CategoryElectrical Parts
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Installation & Application Notes

Disconnect main battery before working on electrical components. Use dielectric grease on all connector pins. Check ground connections — most electrical faults trace to poor grounds. Test with multimeter before installing new parts.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeSpeed Sensor
MaterialPlastic, Metal, Electronics
ApplicationDrivetrain speed monitoring
Service LifeReplace as needed based on performance
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A failing speed sensor may cause the speedometer to show erratic readings, the transmission to shift improperly, or trigger warning lights related to speed or traction control. If left unaddressed, these issues can lead to inefficient operation, increased wear on drivetrain components, or the inability to engage certain speed-dependent functions. This can impact productivity and potentially lead to costly repairs.

Installation Tip

Ensure the mounting surface for the sensor is clean and free of metal shavings before installation to guarantee proper air gap and accurate readings. Avoid using excessive force when tightening the sensor, as this can damage the threads or the sensor housing.

Service Note

Inspect the tone ring or reluctor wheel for damage or debris, and check the associated wiring harness for continuity when replacing the speed sensor.